Aspedamite
A variety of Minerals
What is Aspedamite?
Aspedamite is a very rare mineral, one of two natural heteropolyniobates. Its chemical formula (one of the possible formulas) is complex and shows the presence of essential vacancies: []12(Fe2Fe)Nb4(ThNb9Fe2TiO42)(H2O)9(OH)3. Its structure (isometric, space group Im3) is the same as of the second known heteropolyniobate - menezesite. Aspedamite is somewhat similar to another mineral from Norway, peterandresenite, which is a hexaniobate.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Aspedamite before comparing listings or appraisals.
Size & Weight
Larger, intact specimens usually command higher prices.
Rarity & Demand
Scarce material or popular varieties sell at a premium.
Condition & Finish
Chips, repairs, and heavy wear lower value; clean prep helps.
Treatment & Provenance
Untreated specimens with documented locality are prized.
Quick Facts
Physical Properties
- Color
- Brownish orange to deep red
- Hardness (Mohs)
- 3 - 4
- Rock tumbling
- Not recommended
- Density
- 4.07 g/cm³
- Streak
- Very pale orange
Chemical Properties
- Chemical Formula
- ☐ 12(Fe+23Fe2+)Nb4(ThNb9Fe+23 Ti4+O42)(H2O)9(OH)3
- Elements
- Fe, H, Nb, O, Th, Ti
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Aspedamite FAQs
How do I identify Aspedamite?
Aspedamite can be identified by its hardness of 3 - 4 on the Mohs scale, Brownish orange to deep red color. Look for these key characteristics when examining specimens.
What color is Aspedamite?
Aspedamite typically appears in Brownish orange to deep red. Color can vary depending on impurities and formation conditions.
How hard is Aspedamite?
Aspedamite has a hardness of 3 - 4 on the Mohs scale. This makes it a soft mineral that can be scratched easily.
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